What is the meaning of "Sikim be'Eineichem"?
Rashi: It means 'sharp pegs that make holes in your eyes'.
Rashbam: 'Sharp thorns that stab you in the eyes'. 4
Targum Onkelos: It means 'armed brigades'.
Targum Yonasan: 'They will look at you with an Ayin ha'Ra'.
Ramban: Causing you to emulate their abominations and to worship idols like them, as the Torah specifically writes in Sh'mos 23:33.
Ramban: To blind you into not seeing and understanding (the truth) - like "Ki ha'Shochad Ye'aver Pikchim' in Sh'mos 23:8, and "Lifnei Iver Lo Siten Michshol" in Vayikra 19:14.
What is the meaning of "Tzeninim be'Tzideichem"?
Rashi #1: It means 'a wall of thorns 1 that surrounds you and prevents you from going in or out.'
Rashi (in Yehoshua, 23:13): 'They will surround you like a Tzoneh' - a shield that surrounds a person on three-sided.
Rashbam #2: It means 'to cool you down'. 3
Targum Yonasan: 'They will surround you with shields'.